Pontiac 2004 Bonneville - Manual (Page 305)

Engine Overheating
You will find a coolant temperature gage or a DIC
warning message about a hot engine on your vehicle’s
instrument panel. See Engine Coolant Temperature
Gage on page 3-47 and DIC Warnings and Messages
on page 3-61.
If Steam Is Coming From Your Engine
{ CAUTION:
Steam from an overheated engine can burn
you badly, even if you just open the hood. Stay
away from the engine if you see or hear steam
coming from it. Just turn it off and get
everyone away from the vehicle until it cools
down. Wait until there is no sign of steam or
coolant before you open the hood.
If you keep driving when your engine is
overheated, the liquids in it can catch fire. You
or others could be badly burned. Stop your
engine if it overheats, and get out of the
vehicle until the engine is cool.
Notice: If your engine catches fire because you
keep driving with no coolant, your vehicle can
be badly damaged. The costly repairs would not be
covered by your warranty.
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